1276540110989 has 24 divisors (see below), whose sum is σ = 1587317551200. Its totient is φ = 1014842312640.

The previous prime is 1276540110947. The next prime is 1276540111009. The reversal of 1276540110989 is 9890110456721.

It is not a de Polignac number, because 1276540110989 - 2²⁰ = 1276539062413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1276540110989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1276540110089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18035234 + ... + 18105875.

It is an arithmetic number, because the mean of its divisors is an integer number (66138231300).

Almost surely, 2^{1276540110989} is an apocalyptic number.

1276540110989 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1276540110989 is a deficient number, since it is larger than the sum of its proper divisors (310777440211).

1276540110989 is a wasteful number, since it uses less digits than its factorization.

1276540110989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36141165 (or 36141152 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 53.

The spelling of 1276540110989 in words is "one trillion, two hundred seventy-six billion, five hundred forty million, one hundred ten thousand, nine hundred eighty-nine".